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Sun, 09 Nov 2025 20:40:59 -0800 (PST) X-Google-Smtp-Source: AGHT+IFs3BvO0OD7+LWZO/k7GVlxxdsy8NWXk+Q/cW7eDlhRwsTQl5AgxR/jL34RGXKgTrqDOBmKwg== X-Received: by 2002:a05:6a20:734f:b0:2cc:acef:95ee with SMTP id adf61e73a8af0-353a428d5fcmr8378717637.52.1762749658917; Sun, 09 Nov 2025 20:40:58 -0800 (PST) Received: from [10.151.37.217] ([202.46.23.19]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7b0c9f00beesm10145070b3a.25.2025.11.09.20.40.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 09 Nov 2025 20:40:58 -0800 (PST) Message-ID: Date: Mon, 10 Nov 2025 10:10:47 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v17 07/12] firmware: psci: Implement vendor-specific resets as reboot-mode To: Shivendra Pratap , Bartosz Golaszewski , Bjorn Andersson , Sebastian Reichel , Rob Herring , Sudeep Holla , Souvik Chakravarty , Krzysztof Kozlowski , Conor Dooley , Andy Yan , Mark Rutland , Lorenzo Pieralisi , Arnd Bergmann , Konrad Dybcio , cros-qcom-dts-watchers@chromium.org, Vinod Koul , Catalin Marinas , Will Deacon , Florian Fainelli , Moritz Fischer , John Stultz , Matthias Brugger , Krzysztof Kozlowski Cc: Dmitry Baryshkov , Mukesh Ojha , Stephen Boyd , Andre Draszik , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Elliot Berman , Xin Liu , Srinivas Kandagatla , Umang Chheda , Nirmesh Kumar Singh References: <20251109-arm-psci-system_reset2-vendor-reboots-v17-0-46e085bca4cc@oss.qualcomm.com> <20251109-arm-psci-system_reset2-vendor-reboots-v17-7-46e085bca4cc@oss.qualcomm.com> Content-Language: en-US From: Kathiravan Thirumoorthy In-Reply-To: <20251109-arm-psci-system_reset2-vendor-reboots-v17-7-46e085bca4cc@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: xxxxJPnIyyuUhmuq5qPh2HrD_VzFemfS X-Authority-Analysis: v=2.4 cv=DJSCIiNb c=1 sm=1 tr=0 ts=69116cdc cx=c_pps a=Qgeoaf8Lrialg5Z894R3/Q==:117 a=j4ogTh8yFefVWWEFDRgCtg==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=eAYKFCynwHV13TWbRR4A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=x9snwWr2DeNwDh03kgHS:22 X-Proofpoint-GUID: xxxxJPnIyyuUhmuq5qPh2HrD_VzFemfS X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTEwMDAzNiBTYWx0ZWRfXyPmoFOkRD9VW th13zmSrl3Q10Q/QP9JnhD7lsKLyUVu8wS0Paex8d/0z1sz9m/EZFx9L7M9XAT7z5uGwLwVC8Vf aH0sxeOTbpaEgNKHjbgRoBj+Hqnuy2/qECbsaf6RZYLoGzQkjOELQEhV7g1E5cUfKI/FRGH+Jio qYc1evsSQbhTjAqMSQOfb/p4hrTPaZa5525Eoq6ETl/s8ndExlX4lakwsm2bg79c0ltNlCjMgXY 81K9XgqFki8pOtG8LpF4EOwqY6Se53129eAGBFC2qPnRvsfLzukyrHNRqtQSyNpOdt5AsQe9Pcq Zghh4GcRPKzEV/t/mkWJvAeQITTE4/VazqKvagVEN98aqlmz6LOS0luBk8vjxThrGOWz2Gxw5Zt +ITiubmN01KSDFXPJxpgW6kxGY5h/w== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-10_02,2025-11-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 malwarescore=0 phishscore=0 impostorscore=0 suspectscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511100036 On 11/9/2025 8:07 PM, Shivendra Pratap wrote: > +static int __init psci_init_vendor_reset(void) > +{ > + struct reboot_mode_driver *reboot; > + struct device_node *psci_np; > + struct device_node *np; We can take advantage of __cleanup() attribute to simply the code paths. Declare the variables like below     struct device_node *psci_np __free(device_node) = NULL;     struct device_node *np __free(device_node) = NULL; and get rid of the explicit of_node_put(). I think, we can take up this an improvement once this series landed. But if you happen to respin to address other issues, please take care of this as well. > + int ret; > + > + if (!psci_system_reset2_supported) > + return -EINVAL; > + > + psci_np = of_find_compatible_node(NULL, NULL, "arm,psci-1.0"); > + if (!psci_np) > + return -ENODEV; > + > + np = of_find_node_by_name(psci_np, "reboot-mode"); > + if (!np) { > + of_node_put(psci_np); > + return -ENODEV; > + } > + > + ret = atomic_notifier_chain_register(&panic_notifier_list, &psci_panic_block); > + if (ret) > + goto err_notifier; > + > + reboot = kzalloc(sizeof(*reboot), GFP_KERNEL); > + if (!reboot) { > + ret = -ENOMEM; > + goto err_kzalloc; > + } > + > + reboot->write = psci_set_vendor_sys_reset2; > + reboot->driver_name = "psci"; > + > + ret = reboot_mode_register(reboot, of_fwnode_handle(np)); > + if (ret) > + goto err_register; > + > + of_node_put(psci_np); > + of_node_put(np); > + return 0; > + > +err_register: > + kfree(reboot); > +err_kzalloc: > + atomic_notifier_chain_unregister(&panic_notifier_list, &psci_panic_block); > +err_notifier: > + of_node_put(psci_np); > + of_node_put(np); > + return ret; > +} > +late_initcall(psci_init_vendor_reset)